The main function of bulliform cells in grasses is :

Core Logic

The root has several distinct zones starting from the apex:

• Root cap zone
• Region of meristematic activity
• Region of elongation
• Region of maturation

From the epidermal cells in the region of maturation, very fine and delicate, thread-like structures called root hairs emerge. They increase the surface area for water and mineral absorption.

Step 1: Final Conclusion

Root hairs arise from the region of maturation.

Pattern Recognition

Root hairs require fully differentiated epidermal cells, which only exist in the maturation zone. Elongation and meristematic zones possess dividing/growing cells without mature outgrowths.

Chapter Mix

Class 11 Biology: Anatomy of Flowering Plants

Core Logic

• Conjunctive tissue (A) is the parenchymatous tissue that lies between the xylem and phloem patches in roots. (A-III)
• Casparian strips (B) are suberin depositions forming a water-impermeable band in the cell walls of endodermal cells. (B-IV)
• Subsidiary cells (C) are specialized epidermal cells found adjacent to and supporting the guard cells in stomata. (C-I)
• Starch sheath (D) is a term used for the endodermis in dicot stems because its cells are rich in starch grains. (D-II)

Step 1: Final Conclusion

The correct matches are A-III, B-IV, C-I, D-II.

Pattern Recognition

Casparian strips exclusively map to endodermal cells with suberin (B-IV). This immediately isolates the correct combinations, and subsidiary cells uniquely relate to stomata/guard cells (C-I).

Chapter Mix

Class 11 Biology: Anatomy of Flowering Plants